File: President Barack Obama speaks at Vermont Avenue Baptist Church January 17, 2010 in Washington, DC. President Obama spoke during a service in honor of civil rights leader Dr. Martin Luther King Jr.
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Talk about the long-debunked rumors that Obama is a Muslim is once again in the cultural zeitgeist, thanks to a new poll showing the majority of likely Republican primary voters in Albamaa and Mississippi don't believe Obama is a Christian. It led to "Obama is Muslim" hitting the top trending topics nationwide, including right here in Los Angeles.

The survey by Public Policy Polling shows that only 14 percent of Albama voters believe Obama is a Christian, while 45 percent believe he's a Muslim and 41 percent aren't sure.

In Mississippi, those numbers are similar but more pronounced, with only 12 percent saying he's a Christian, a 52 percent majority saying he's a Muslim and 36 percent not sure.

Republican presidential candidate Rick Santorum recently attacked Obama as having "some phony theology," but Santorum later added that he was speaking specifically about Obama's environmental policies not coming from Christian theology, not questioning Obama's religion overall.

Obama is a self-professed Christian and wrote about coming to faith in his first book "Dreams from My Father," before becoming a professional politician.